School influence on how i see myself

Well first of all school is my main focus but I seem to get destracted all the time. In the future i see myself in a big house with three kids and i want to be a RN. i feel as if i don't get through high school I'll never make in life, sometimes when im not doing so god in school I always tell myself you not going to be able to get in nobodies UNIVERSITY only a COMMUNITY college. But I have high standards for myself and i believe if i try harder and study more than I'll be a better student. I see myself as a good nurse in the future, young and successful.